Home / 3,936.60-5,430.96-3,439.26

Finding the Fourth Proportional to 3,936.60, 5,430.96 and 3,439.26

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Solution

The fourth proportional to 3,936.60, 5,430.96 and 3,439.26 is: 4,744.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.60 : 5,430.96 = 3,439.26 : x
  2. Step 2: Convert to fraction form
    3,936.60/5,430.96 = 3,439.26/x
  3. Step 3: Cross multiply
    3,936.60x = 5,430.96 × 3,439.26
  4. Step 4: Simplify right side
    3,936.60x = 18,678,483.49
  5. Step 5: Solve for x
    x = 18,678,483.49/3,936.60
  6. Step 6: Final answer
    x = 4,744.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.